Johan Pragt
16Patents
9h-index
37Co-inventors
72Inventor score
Filing activity: Oct 16, 1995 → Nov 20, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5944257A | Bulb-operated modulating gas valve with minimum bypass | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6671961B1 | Shaver provided with a shaving head having a sub-frame and a main frame | Performing Operations; Transporting | 33 | Expired |
| US6877227B2 | Shaver provided with a shaving head having a sub-frame and a main frame | Performing Operations; Transporting | 29 | Expired |
| US5693244A | Apparatus for heating liquids which operates power supply in response to detection of heating element bending | Electricity | 28 | Expired |
| US6574866B2 | Hair removing apparatus comprising plate-shaped carriers which care positioned and movable with respect to each other | Performing Operations; Transporting | 23 | Expired |
| US6327784A | Method of manufacturing a cutting member having an auxiliary layer | Performing Operations; Transporting | 14 | Expired |
| US9789617B2 | Blade set and hair cutting appliance | Performing Operations; Transporting | 13 | Active |
| US8186064B2 | Shaving apparatus | Performing Operations; Transporting | 11 | Expired |
| US8458914B2 | Shaving device comprising a pivotably arranged assembly of cutting elements | Performing Operations; Transporting | 10 | Active |
| US6137089A | Heating element | Electricity | 8 | Expired |
| US9821478B2 | Shaving apparatus, a cutting unit, and a shaving head | Performing Operations; Transporting | 8 | Active |
| US10850409B2 | Shaving apparatus, a cutting unit and a shaving head | Performing Operations; Transporting | 8 | Active |
| US9555551B2 | Rotary shaving unit | Performing Operations; Transporting | 5 | Active |
| US10730197B2 | Attachment comb and hair cutting appliance | Human Necessities | 5 | Active |
| US8312592B2 | Cleaning apparatus for releasing and transporting particles away from an area to be cleaned | Human Necessities | 0 | Active |
| US9956697B2 | Personal care device as well as a cutting unit for such a personal care device | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.